3M Microfinishing Film Roll 372L, 40 Mic 5MIL, 1.398 in x 492 ft x 2 inGeneral Information Brand 3M Bond Type Resin Core Type Plastic Country Of Origin United States Sold As Roll California Residents Proposition 65 Warning Dimensions and Specifications Backing Thickness (Imperial) 5 mil Core Size (Imperial) 2 in Core Size (Metric) 50. 8 mm Micron Grade 40 m Overall Length (Imperial) 492 ft Overall Length (Metric) 150 m Overall Width (Imperial) 1. 417 in Overall Width (Metric) 36 mm Grit Non Pertinent Volume 298. 88 cubic